Manejo de Spodoptera frugiperda en maíz amarillo variedad criolla con la aplicación de tres métodos en el cantón Loreto, provincia de Orellana

Abstract

This investigation aimed to control Spodoptera frugiperda in yellow corn, Criollo variety with the application of three methods in the Loreto canton, Orellana province. A chemical treatment which used the insecticide (Chlorpyrifos), widely used for the control of the cogollero by the inhabitants of the area, the ethological treatment where LED lamps were implemented, and in the last treatment was used a biological insecticide with Metarhizium anisopliae as active ingredient; being the Criollo variety the seed used in the sector of Loreto. In the field, four treatments were implemented, those already described and a control; each treatment with three replications, where the necessary cultural activities were carried out for the sowing of the corn, as well as the application of fertilizers and fungicides throughout the experimental field; 20 days after sowing, data collection began, in this case the plant height was taken sequentially at 60 and 90 dds, and the degree of damage to the leaves was evaluated according to the Davis scale and the susceptibility of the plants in each treatment, One of the most important parameters was the determination of the benefit/cost ratio, from which it was obtained that the treatment with the best results in the study was the chemical treatment, but it was also determined that it can be replaced with the use of an ethological control, as the results obtained in the study showed that it is possible to replace the chemical treatment with an ethological control, since the results obtained show that statistically they were similar to the chemical treatment; This is an alternative to the use of chemical insecticides for the control of Spodoptera frungiperda.